著者

栗田 利雄 三橋 重信 金綱 久明 井口 正俊 代田 忠 トリフイジョ エレラ

出版者

紙パルプ技術協会

雑誌

紙パ技協誌 (ISSN:0022815X)

巻号頁・発行日

vol.36, no.2, pp.301-310, 1982

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<I>Agave Tequilana</I> has been cultivated in Mexico for the manufacture of an alcoholic drinks well known as &ldquo;Tequila&rdquo;. For this purpose, the root stock of the plant is commercially used by cutting off leaves from the plant.<BR>In the course of &ldquo;Tequila manufacture process&rdquo;, a large quantity of fibrous residue is expelled out of the process as waste by pressing the cooked root stock. The leaves of the plant have not been utilized and left in the plantation as waste material.<BR>In this paper, both of the fibers obtained by decorticating from the leaves (sample A) and fibrous residue (sample B) were investigated for their pulping and paper-making properties, mainly on physical properties in relation to beating.<BR>From the results of this investgation, it was found that : <BR>(1) The fibrials in sample A showed parallel orientation to the fiber axis, and those in sam-ple B showed helical arrangement with respect to fiber axis.<BR>(2) The average length and width in fiber cells were in value of 1.7 mm, 10.3 um for sample A and 0.8 mm, 25.5 pm for sample B, respectively.<BR>(3) The fiber cell in sample A had a thicker cell wall and a narrower lumen compared with those in sample B.<BR>(4) sample A contained a very high quantity of soluble material in 1% NaOH solution, however, the contentes of total-cellulose, &alpha;-cellulose and lignin were in low value. In contrast, sample B contained high contents of total-cellulose, &alpha;-cellulose, pentsan and lignin.<BR>(5) Alkaline sulfite cooking process was applicable successfully to the both samples. But more rigorous condition was required in these samples than would be expected from the chemical constituents of both samples.<BR>(6) The pulp yield of sample A was very low compared with sample B. It was attributed to the low contents of total-cellulose and a-cellulose of raw material.<BR>(7) The brightness of pulp from sample B was low. It might suggest that some lignin remains in this pulp.<BR>(8) The water retention values and the bulk densities of the pulps from sample A increased rapidly on beating. It might suggest that an internal fibrillation in pulp fiber of sample A occurs more easily on beating.<BR>(9) The opacity of papers made from both samples decreased slowly on beating, and the tendency was not so remarkable. As a whole, these values remained at a high level compared with papers made from beaten conventional chemical wood pulps.<BR>(10) The breaking length, burst factor and tear factor of papers from sample A were in a high values than those of sample B. The breaking length and burst factor of papers from sample A were in comparable with papers made from beaten conventional chemical wood pulps, and the tear factors were superior to them.